CoverageForm 410-K10-Q8-K13D13G13F

Costco Wholesale Corp /New

COSTCIK 0000909832 · Every Form 4 filed by insiders at this issuer. See financials →

Annual report (10-K)

Latest 10-K filed Oct 8, 2025. Sentiment + YoY language diff vs prior year. Read sections →

Signal:Neutral
Risk Factors: not detected
MD&A:tone 0.0034Δ-0.001293% similar+45/-42

Sentiment via Loughran-McDonald lexicon · YoY diff via Jaccard similarity + paragraph set difference.

Recent 8-K announcements

Per-item disclosure feed. Item 2.02 is the earnings release.

Top insiders

Most active reporters at Costco Wholesale Corp /New

NameRolesFilings
Frates Caton
Officer
15
Adamo Claudine
Officer
13
Callans Patrick J
Officer
12
Klauer James C
Officer
12
Miller Russell D
Officer
12

Showing 1-5 of 30

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Top performers

Insiders ranked by realized 90-day signed return on their open-market trades at Costco Wholesale Corp /New. Minimum 3 scored trades. Returns are signed - a sale followed by a rally counts against the insider.

#InsiderTradesWin rateAvgMedianBestWorst
1Galanti Richard A90%-12.4%-7.9%-5.7%-25.3%
2Miller Russell D617%-10.5%-9.2%+5.3%-25.6%
3Vachris Roland Michael30%-10.1%-8.1%-7.3%-14.8%
4Callans Patrick J425%-9.4%-11.2%+3.4%-18.8%
5Riel Pierre333%-7.3%-3.4%+5.8%-24.5%
6Adamo Claudine617%-7.3%-6.6%+17.5%-25.4%
7Frates Caton617%-5.9%-5.5%+5.3%-16.3%
8Klauer James C450%-3.9%-1.1%+4.3%-18.0%
9Decker Susan L922%-3.9%-6.4%+2.3%-7.7%
10Hines Daniel M.520%-2.1%-6.0%+17.5%-10.4%

All filings

187 Form 4 / 4-A filings, newest first

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